JPH088977Y2 - Locking piece mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a locking piece attachment device in which the operation of a return preventing means for preventing the locking piece group from returning is improved.

[Conventional technology]

As shown in FIG. 7, the conventional locking piece attaching device is provided with a return prevention means 12 'behind the feeding means 11 for advancing the locking piece group T by one pitch, and the return prevention means 12 is provided. By pressing the connecting portion 4 of the locking piece group T with the claw-shaped projection 25 'of', the feeding means 11 is rotated when the feeding means 11 rotates clockwise.
It is designed to prevent the locking piece group T from returning due to the claw-shaped projections 18 of FIG.

As shown in FIG. 8, the main body 26 'of the return preventing means 12' is slidably disposed in the groove 60 of the locking piece attaching device main body 7, and the claw-shaped projection 25 'thereof is locked. It is biased by a spring 29 'so as to project into the guide groove 10 of the piece group T.

However, since the length 26 of the return prevention means main body 26 'is shorter than the height h, the sliding movement lacks smoothness, and the claw-shaped projection 25' and the connecting rod 4 of the locking piece group T are not provided. Also, there is a problem in that the feeding means 11 has a problem in engagement with the projection 18 of the claw portion.

It is possible to make the sliding movement of the return preventing means main body 26 'smooth by increasing the length l of the return preventing means main body 26', but the place where the return preventing means 12 is installed is not only small in space. Since it is necessary to avoid the interference with the feeding means 11, it is very difficult to increase the length 1 of the return preventing means main body 26 'to smooth the sliding movement. Further, if the length l of the return preventing means main body 26 'is attempted to be increased, the front portion of the apparatus main body becomes longer, and the grip stroke of the trigger 35 also increases, which deteriorates the usability. Further, the piston 38 that pushes out the locking piece becomes long, which causes many problems such as deterioration of durability.

[Problems to be solved by the device]

The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a return prevention means for preventing the return of the locking piece group due to the swinging movement of the feeding means, while having a compact structure. An object of the present invention is to provide a locking piece attaching device that smoothes the operation and smoothes the engagement between the claw-shaped projection of the return preventing means and the connecting portion of the locking piece group.

[Means for solving the problem]

That is, in the locking piece attaching device of the present invention, the locking piece group T, which is an assembly of the locking pieces t planted on the connecting rod 5 via the connecting portion 4 at a predetermined interval, is used to move the locking piece group T forward and downward of the main body 7. Direction is arranged in parallel with the feeding means 11 for advancing the locking group T by one pitch, and a return prevention means 12 for preventing the locking piece group T from reversing is provided. , A piston 38 for sequentially driving the lateral rods 2 of the respective locking pieces t sent to the rear part of the hollow needle 8.
In the locking piece attaching device having the
Is rotatably supported by the shaft 27 on the main body of the device, and the guide groove
Place the claw-shaped projection 25 on the 10 side and set the spring 29 on the opposite side of the guide groove 10.
It is characterized in that an inclined surface 25a is formed on the upper portion of the claw-like projection 25 and an engaging surface with the connecting portion 4 of the locking piece t is formed on the lower portion.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 3, the locking piece attaching device 6 is of a pistol type, and a hollow needle 8 is detachably attached to its tip.

Further, the locking piece attaching device 6 has a guide groove 10 facing the inlet 9 of the hollow needle 8 for filling the locking piece group T, as shown in FIG. Further, there is provided a feeding means 11 for advancing the locking piece group T by one pitch facing the inlet 9 of the hollow needle 8. Further, a return prevention means 12 for preventing the locking piece group T from returning to the back is provided behind the feeding means 11.

As shown in FIG. 2, the feeding means 11 is mainly composed of a supporting plate 13, a feeding piece 14, and a leaf spring 15, and the supporting plate 13 is attached with a locking piece via its main shaft 16. It is swingably attached to the apparatus body 7. The upper front end portion of the support plate 13 is hollow, and a metal feed piece 14 having a claw-shaped projection 18 is pivotally supported by a shaft 20 in the first hollow portion 17. Further, the shaft-shaped projection 21 on the back side of the feed piece 14 projects into the second recess 22 that restricts the projection amount of the claw-shaped projection 18. The lower part of the leaf spring 15 described above is the first
The leaf spring 15 is attached to a groove 23 communicating with the recess 17 and biases the feed piece 14 in the clockwise direction.

On the other hand, as shown in FIG. 1, the return prevention means 12 has a claw-shaped projection 25 that engages with the connecting portion 4 of the locking piece group T. The body portion 26 having the projection 25 is swingably attached to the locking piece attachment device body 7 by a shaft 27. Further, the claw-shaped projection 25 is biased toward the guide groove 10 by the spring 29 installed between the bracket 28 fixed to the main body portion 26 and the apparatus main body 7.

Further, the return prevention means main body 26 has a window portion 30, and the main shaft 16 of the feeding means 11 penetrates through the window portion 30.

Here, the locking piece group will be described with reference to FIG. 9 and FIG.
As shown in FIG. 10, the locking piece group T is integrally formed of a synthetic resin such as nylon or polypropylene,
The locking piece group t is connected to the connecting rod 5 via the connecting portion 4 in a comb-teeth shape. Further, the locking piece t includes the head 1 and the horizontal bar 2
And a filament portion 3 connecting these two members. Then, the feeding means is provided to the connecting portion 4 described above.
The claw-shaped projection 18 of 11 and the claw-shaped projection 25 of the return prevention means 12 are engaged with each other.

As shown in FIG. 4, a sliding member 33 is slidably attached to an intermediate lever 32 pivotally supported by a grip portion 31 of the device body 7, and the sliding member 33 and the locking piece attachment device body. 7
A trigger 35 is urged by a spring 34 installed between and.

Further, a slider 36 is fitted to the intermediate lever 32 so that the slider 36 is moved back and forth along the first groove 37 by the swinging motion of the intermediate lever 32. At the front end of the slider 36, the horizontal bar 2 of the locking piece t is attached to the hollow needle 8
A piston 38 for pushing out from is fixed.

In the second groove 39 parallel to the first groove 37, the slide bar 40 for swinging the feeding means 11 is arranged. The projection 41 at the tip of the slide bar 40 is fitted into the elongated recess 24 provided in the support plate 13 described above, and when the slide bar 40 moves forward, the feeding means 11 rotates in the clockwise direction, and the slide bar 40 moves. When 40 is retracted, the feeding means 11 is rotated counterclockwise.

Further, the slide bar 40 has a forced feed preventing means 42.
Is provided. As shown in Fig. 5, slide bar
40 is a support member at the front end of the slit 43 provided in the body.
44 are arranged. The support member 44 is a slide bar 40.
It is fixed to a stopper 46 fixed to the back side of. Also, slide bar 40 so that it faces the stopper 46.
A piece 48 inserted into the slit 43 is fixed to a guide plate 47 arranged on the back side of the. A support member 45 is fixed in front of the piece 48, and a spring 49 is installed between the support member 45 and the support member 44. Further, the protrusion 48 that engages with the intermediate lever 32 described above is fixed to the piece 48. Further, facing the protrusion 50, the slide bar 40 has a protrusion 51 that engages with the intermediate lever 32.
Are fixed (see FIG. 2).

 Next, the operation of the locking piece attaching device will be described.

When the trigger 35 is pulled, as shown in FIG. 2, the intermediate lever 32
Rotates as shown by arrow A, and slide bar
Since 40 is moved forward, the support plate 13 of the feeding means rotates about the main shaft 16 in the arrow B direction. At this time, the claw-shaped projection 18 of the feed piece 14 hits the connecting portion 4 of the locking piece group T to try to reverse the locking piece group T, but the claw-shaped projection 25 of the return prevention means 12
Is engaged with the connecting portion 4 of the locking piece group T, the locking piece group T is not returned in the direction opposite to the feeding direction.

Next, when the pulling force of the trigger 35 is released, the intermediate lever 32 rotates in the direction of the arrow H to move the slide bar 40 in the right direction in the figure, as shown in FIG. This slide bar 40
The feeding means 11 rotates in the direction of arrow C in accordance with the return of the above, and the locking piece group T is advanced by one pitch in the direction of arrow D by the claw-shaped projection 18. At this time, since the connecting portion 4 of the locking piece group T pushes the slope 25a of the claw-shaped projection 25, the claw-shaped projection 2 of the return preventing means 2
As shown in FIG. 1, 5 is pushed in the direction of arrow F with shaft 27 as a fulcrum. Then, when the connecting portion 4 of the locking piece group gets over the claw-shaped projection 25, the claw-shaped projection 25 returns in the direction of the arrow G with the shaft 27 as a fulcrum and is connected to the connecting portion 4 of the locking piece group T. It engages and prevents the locking piece group T from returning.

On the other hand, the return of the intermediate lever 32 is performed by the intermediate lever 32 and the main body 7.
This is forcibly carried out by a spring 34 installed between and, but since the projection 50 moves against the spring force of the spring 49 as the intermediate lever 32 returns, the bottom locking piece t
Is constantly pressed against the support surface 52 with a constant force.

[Effect of device]

As described above, according to the present invention, the return preventing means 12 makes a pendulum movement in the lateral direction so as to move in and out of the guide groove 10 about the shaft 27, so that when the locking piece t is fed, its locking is performed. Claw-shaped projection 25 whose upper inclined surface 25a is pressed by the connecting portion 4 of the t-piece
Is smoothly retracted laterally from the guide groove 10 to allow the connecting portion 4 to pass therethrough, and immediately after the connecting portion 4 is passed, the connecting portion smoothly returned to and passed through the guide groove 10 by the bias of the spring 29. It is possible to surely prevent the connecting portion 4 from backing up by engaging with 4.

Further, the return prevention means 12 does not substantially move up and down only by performing a pendulum movement in the lateral direction so as to move in and out of the guide groove 10 around the shaft 27, so that the height at which the claw-like projection 25 returns is determined by the connecting portion. 4 almost coincides with the height of the claw-like projection 25 when it is released from the claw-like projection 25 and passes through. Therefore, it suffices to provide an accommodation space for one locking piece t below the engaging surface of the claw-shaped projection 25, and the horizontal bar 2 can be fixed so that it can hardly move. Since the central axis of the piston 38 and the central axis of the piston 38 can be aligned with each other and the horizontal bar 2 can be accurately driven, no improper driving or blank driving of the locking piece t will not occur.

[Brief description of drawings]

FIG. 1 is a side view of a return preventing means of a locking piece attaching device according to the present invention, FIG. 2 is an enlarged side view of essential parts of the locking piece attaching device according to the present invention, and FIG. FIG. 4 is a side view of the stop piece attaching device, FIG. 4 is a side view showing the internal structure of the engagement piece attaching device according to the present invention, and FIG. 5 is a side view of the forced return preventing means in the engagement piece attaching device according to the present invention. FIG. 6 is an operation explanatory view of the locking piece attaching device according to the present invention, FIG. 7 is a side view of a main part of the conventional locking piece attaching device, and FIG. 8 is a side view of a conventional return preventing means. FIG. 9 is a plan view of the locking piece group, and FIG. 10 is a side view of the locking piece group. 11 ... Feeding means, 12 ... Return prevention means, T ... Locking piece group.

Claims (1)

[Scope of utility model registration request] 1. A guide groove 10 in which a locking piece group T, which is an assembly of locking pieces t planted on a connecting rod 5 via a connecting portion 4 at a predetermined interval, is arranged in the front and vertical direction of the apparatus main body 7. Each of the sent locking means is provided with a return preventing means 12 arranged in parallel with the feeding means 11 for advancing the locking group T forward by 1 pitch and preventing the backward movement of the locking piece group T. In the locking piece attaching device having the piston 38 for sequentially driving the horizontal bar 2 of the piece t into the rear portion of the hollow needle 8, the return preventing means 12 pivotally supports the device main body 7 by the shaft 27 so as to allow pendulum movement, and guide groove. The claw-shaped projection 25 is arranged on the 10 side, and the opposite side of the guide groove 10 is biased by the spring 29.
An engaging piece attaching device characterized in that an inclined surface 25a is formed on an upper portion of 25 and an engaging surface for engaging the connecting portion 4 of the engaging piece t is formed on a lower portion.